Raman Spectra of ZrS2 and ZrSe2 from Bulk to Atomically Thin Layers
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Raman Spectra of ZrS2 and ZrSe2 from Bulk to Atomically Thin Layers

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Raman Spectra of ZrS2 and ZrSe2 from Bulk to Atomically Thin Layers

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dc.contributor.author Mañas Valero, Samuel
dc.contributor.author García López, Víctor
dc.contributor.author Cantarero Sáez, Andrés
dc.contributor.author Galbiati, Marta
dc.date.accessioned 2019-06-18T13:28:58Z
dc.date.available 2019-06-18T13:28:58Z
dc.date.issued 2016
dc.identifier.uri https://hdl.handle.net/10550/70497
dc.description.abstract In the race towards two-dimensional electronic and optoelectronic devices, semiconducting transition metal dichalcogenides (TMDCs) from group VIB have been intensively studied in recent years due to the indirect to direct band-gap transition from bulk to the monolayer. However, new materials still need to be explored. For example, semiconducting TMDCs from group IVB have been predicted to have larger mobilities than their counterparts from group VIB in the monolayer limit. In this work we report the mechanical exfoliation of ZrX2 (X = S, Se) from bulk down to the monolayer and we study the dimensionality dependence of the Raman spectra in ambient conditions. We observe Raman signal from bulk to few layers and no shift in the peak positions is found when decreasing the dimensionality. While a Raman signal can be observed from bulk to a bilayer for ZrS2, we could only detect signal down to five layers for flakes of ZrSe2. These results show the possibility of obtaining atomically thin layers of ZrX2 by mechanical exfoliation and represent one of the first steps towards the investigation of the properties of these materials, still unexplored in the two-dimensional limit.
dc.language.iso eng
dc.relation.ispartof Applied Sciences, 2016, vol. 6, num. 9, p. 264
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Mañas Valero, Samuel García López, Víctor Cantarero Sáez, Andrés Galbiati, Marta 2016 Raman Spectra of ZrS2 and ZrSe2 from Bulk to Atomically Thin Layers Applied Sciences 6 9 264
dc.subject Espectroscòpia Raman
dc.subject Semiconductors
dc.title Raman Spectra of ZrS2 and ZrSe2 from Bulk to Atomically Thin Layers
dc.type info:eu-repo/semantics/article
dc.date.updated 2019-06-18T13:28:58Z
dc.identifier.doi https://doi.org/10.3390/app6090264
dc.identifier.idgrec 117144

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